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A013706
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Decimal expansion of 2 sum_{k=1}^{50,000} \frac{(-1)^{k-1}}{2k-1}.
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2
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1, 5, 7, 0, 7, 8, 6, 3, 2, 6, 7, 9, 4, 8, 9, 7, 6, 1, 9, 2, 3, 1, 3, 2, 1, 1, 9, 1, 6, 3, 9, 7, 5, 2, 0, 5, 2, 0, 9, 8, 5, 8, 3, 3, 1, 4, 7, 3, 8, 8
(list; constant; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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REFERENCES
| J. M. Borwein, P. B. Borwein and K. Dilcher, Pi, Euler numbers and asymptotic expansions, Amer. Math. Monthly, 96 (1989), 681-687.
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LINKS
| J. M. Borwein and R. M. Corless, Review of ``An Encyclopedia of Integer Sequences'' by N. J. A. Sloane and Simon Plouffe", SIAM Review, 38 (1996), 333-337.
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CROSSREFS
| Cf. A000796, A013707, A013705.
Sequence in context: A011350 A161018 A197254 * A195793 A085679 A019669
Adjacent sequences: A013703 A013704 A013705 * A013707 A013708 A013709
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KEYWORD
| cons,nonn,easy,nice
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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